What is a dilation in geometry?
Dilations

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•
Mathematics
•
8th - 10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A dilation is a transformation that alters the size of a figure but not its shape, using a center point and a scale factor.
2.
FLASHCARD QUESTION
Front
What is the scale factor in a dilation?
Back
The scale factor is the ratio of a length of the new figure to the corresponding length on the original figure.
3.
FLASHCARD QUESTION
Front
If a point (x, y) is dilated by a scale factor k, what is the new coordinate?
Back
The new coordinate is (kx, ky).
4.
FLASHCARD QUESTION
Front
What happens to a figure when the scale factor is greater than 1?
Back
The figure undergoes an enlargement.
5.
FLASHCARD QUESTION
Front
What happens to a figure when the scale factor is between 0 and 1?
Back
The figure undergoes a reduction.
6.
FLASHCARD QUESTION
Front
State the coordinate of the image of the point B (-10,-6) under a dilation with center at the origin and scale factor k = 1/2.
Back
(-5,-3)
7.
FLASHCARD QUESTION
Front
What is the scale factor if the point (8, 12) is dilated to (2, 3)?
Back
1/4
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